diff --git a/requirements.txt b/requirements.txt
index 2d5fded..2239723 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -28,7 +28,7 @@ jupyter-echarts-pypkg==0.1.1
 kiwisolver==1.0.1
 lazy-object-proxy==1.3.1
 lml==0.0.2
-lxml==4.2.5
+lxml==4.6.2
 macropy3==1.1.0b2
 MarkupSafe==1.0
 matplotlib==2.2.2